Submission #930541

#	Time	Username	Problem	Language	Result	Execution time	Memory
930541		phlap	Balloons (CEOI11_bal)	C++17	100 / 100	117 ms	11860 KiB

bal

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int M=998244353;

void solve(){
  int x;
  cin>>x;
  pair<int, int> arr[x];
  long double ans[x];
  for(int i=0; i<x; i++){
    cin>>arr[i].first>>arr[i].second;
  }
  stack<pair<int, long double>> s;
  for(int i=0; i<x; i++){
    long double r=arr[i].second;
    while(!s.empty()){
      r=min(r, (arr[i].first-s.top().first)*(arr[i].first-s.top().first)/(4*s.top().second));
      if(r>=s.top().second) s.pop();
      else break;
    }
    ans[i]=r;
    s.push({arr[i].first, ans[i]});
  }
  for(int i=0; i<x; i++) cout<<fixed<<setprecision(3)<<ans[i]<<'\n';
}
 
signed main(){
  //freopen("in", "r", stdin); //freopen("out", "w", stdout);
  cin.tie(0)->sync_with_stdio(0);
  int t=1; //cin>>t;
  while(t--) solve();
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10